Hi,
I personally had no luck with battery driven thermostatic valves. But one day I found this thread:
I have installed this kind of valve on almost every radiator with a sonoff now and I am very happy!
The downside is, of course, that you need to get some kind of power to the radiator.
The upside though: Completely silent, quick state changes, reliable, cheap.
Every room of my house has an aqara temperature sensor and a setpoint item for the target temperature. With the iCalendar binding, I can control what room should be at what temperature and when.